Why is the custom code check very important in a S/4HANA Transition?

The pending move to SAP S/4HANA is unavoidable. The usual route to SAP S/4HANA for SAP ECC customers is through a Brownfield/System Conversion.

During an SAP S/4HANA conversion, all the custom code check and they have to be adapted to the new system. How do you know what has to be adjusted? How to check them? Find out in this video.